[INFO] fetching crate mini_fat 0.1.0...
[INFO] building mini_fat-0.1.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate mini_fat 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate mini_fat 0.1.0 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mini_fat 0.1.0
[INFO] finished tweaking crates.io crate mini_fat 0.1.0
[INFO] tweaked toml for crates.io crate mini_fat 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbcd87edeb1403702530f27bda30bd122edd9ccdd883cf5e371ce6846e924807
[INFO] running `Command { std: "docker" "start" "-a" "bbcd87edeb1403702530f27bda30bd122edd9ccdd883cf5e371ce6846e924807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbcd87edeb1403702530f27bda30bd122edd9ccdd883cf5e371ce6846e924807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbcd87edeb1403702530f27bda30bd122edd9ccdd883cf5e371ce6846e924807", kill_on_drop: false }`
[INFO] [stdout] bbcd87edeb1403702530f27bda30bd122edd9ccdd883cf5e371ce6846e924807
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44651807c5795e9d9ecea53bb9315cc30a7f38d11c8a773fcc38e7a8ca151d6f
[INFO] running `Command { std: "docker" "start" "-a" "44651807c5795e9d9ecea53bb9315cc30a7f38d11c8a773fcc38e7a8ca151d6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling mini_fat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Bpb {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 29 |     jmp_boot: [u8; 3],
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 30 |     oem_name: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     media: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     fat_size_16: u16,
[INFO] [stdout] 39 |     sectors_per_track: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 |     num_heads: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 41 |     hidden_sectors: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     ext_flags: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 45 |     fs_version: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     root_cluster: u32,
[INFO] [stdout] 47 |     fs_info: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 48 |     bk_boot_sector: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 49 |     drive_number: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 50 |     boot_signature: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 51 |     volume_id: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 52 |     volume_label: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 53 |     file_system_type: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     signature: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Bpb` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `order`, `attributes`, and `checksum` are never read
[INFO] [stdout]    --> src/lib.rs:277:5
[INFO] [stdout]     |
[INFO] [stdout] 276 | struct RawDirectoryEntryLongName {
[INFO] [stdout]     |        ------------------------- fields in this struct
[INFO] [stdout] 277 |     order: u8,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 278 |     name: String,
[INFO] [stdout] 279 |     attributes: u8,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 280 |     checksum: u8,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RawDirectoryEntryLongName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "44651807c5795e9d9ecea53bb9315cc30a7f38d11c8a773fcc38e7a8ca151d6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44651807c5795e9d9ecea53bb9315cc30a7f38d11c8a773fcc38e7a8ca151d6f", kill_on_drop: false }`
[INFO] [stdout] 44651807c5795e9d9ecea53bb9315cc30a7f38d11c8a773fcc38e7a8ca151d6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d96c88143c76b2aaab6f6bee6feb1a0133364e1dc06eac7bb9c0642e8951442
[INFO] running `Command { std: "docker" "start" "-a" "2d96c88143c76b2aaab6f6bee6feb1a0133364e1dc06eac7bb9c0642e8951442", kill_on_drop: false }`
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Bpb {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 29 |     jmp_boot: [u8; 3],
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 30 |     oem_name: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     media: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     fat_size_16: u16,
[INFO] [stdout] 39 |     sectors_per_track: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 |     num_heads: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 41 |     hidden_sectors: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     ext_flags: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 45 |     fs_version: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     root_cluster: u32,
[INFO] [stdout] 47 |     fs_info: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 48 |     bk_boot_sector: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 49 |     drive_number: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 50 |     boot_signature: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 51 |     volume_id: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 52 |     volume_label: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 53 |     file_system_type: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     signature: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Bpb` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `order`, `attributes`, and `checksum` are never read
[INFO] [stdout]    --> src/lib.rs:277:5
[INFO] [stdout]     |
[INFO] [stdout] 276 | struct RawDirectoryEntryLongName {
[INFO] [stdout]     |        ------------------------- fields in this struct
[INFO] [stdout] 277 |     order: u8,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 278 |     name: String,
[INFO] [stdout] 279 |     attributes: u8,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 280 |     checksum: u8,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RawDirectoryEntryLongName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mini_fat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Bpb {
[INFO] [stdout]    |        --- fields in this struct
[INFO] [stdout] 29 |     jmp_boot: [u8; 3],
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 30 |     oem_name: String,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     media: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 38 |     fat_size_16: u16,
[INFO] [stdout] 39 |     sectors_per_track: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 40 |     num_heads: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 41 |     hidden_sectors: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     ext_flags: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 45 |     fs_version: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     root_cluster: u32,
[INFO] [stdout] 47 |     fs_info: u16,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 48 |     bk_boot_sector: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 49 |     drive_number: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 50 |     boot_signature: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 51 |     volume_id: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 52 |     volume_label: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 53 |     file_system_type: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 54 |     signature: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Bpb` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `order`, `attributes`, and `checksum` are never read
[INFO] [stdout]    --> src/lib.rs:277:5
[INFO] [stdout]     |
[INFO] [stdout] 276 | struct RawDirectoryEntryLongName {
[INFO] [stdout]     |        ------------------------- fields in this struct
[INFO] [stdout] 277 |     order: u8,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 278 |     name: String,
[INFO] [stdout] 279 |     attributes: u8,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 280 |     checksum: u8,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RawDirectoryEntryLongName` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "2d96c88143c76b2aaab6f6bee6feb1a0133364e1dc06eac7bb9c0642e8951442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d96c88143c76b2aaab6f6bee6feb1a0133364e1dc06eac7bb9c0642e8951442", kill_on_drop: false }`
[INFO] [stdout] 2d96c88143c76b2aaab6f6bee6feb1a0133364e1dc06eac7bb9c0642e8951442